Exibiu tela em branco no meu dispositivo

Nada e mostrado na tela

<ListView x:Name="ListaVeiculo" ItemsSource="{Binding Veiculos}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <ViewCell>
                <ViewCell.View>
                    <!--<Label Text="{Binding Nome}"></Label>-->
                    <Label>
                        <Label.FormattedText>
                            <FormattedString>
                                <FormattedString.Spans>
                                    <Span Text="{Binding Nome}" FontSize="20" ForegroundColor="Pink"></Span>
                                    <Span Text="-"></Span>
                                    <Span Text="{Binding Preco}" FontAttributes="Bold"></Span>
                                </FormattedString.Spans>
                            </FormattedString>
                        </Label.FormattedText>
                    </Label>
                </ViewCell.View>
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>